/*
 * Copyright (c) 2003, Intel Corporation. All rights reserved.
 * Created by:  majid.awad REMOVE-THIS AT intel DOT com
 * This file is licensed under the GPL license.  For the full content 
 * of this license, see the COPYING file at the top level of this 
 * source tree.
 */

/*
 * This test case will verify that sem_timedwait will wait one second to
 * unlock the locked semaphore, and then when the semaphore fails to 
 * unlock should return -1, and leave the semaphore status unchanged 
 * by doing sem_post on the sempahore and check the current value of 
 * the semaphore.
 */

#define _XOPEN_SOURCE 600

#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <semaphore.h>
#include <sys/stat.h>
// #include <fcntl.h>
#include <time.h>
#include "posixtest.h"


#define TEST "2-2"
#define FUNCTION "sem_timedwait"
#define ERROR_PREFIX "unexpected error: " FUNCTION " " TEST ": "



int sem_timedwait_2_2() {
	sem_t mysemp;
	struct timespec ts;
	int sts, val;


        if ( sem_init (&mysemp, 0, 0) == -1 ) {
                perror(ERROR_PREFIX "sem_init");
                return PTS_UNRESOLVED;
        }

	// TODO: 支持timeout后不需要
	// ts.tv_sec = time(NULL);
	if (clock_gettime(CLOCK_REALTIME, &ts) != 0) {
		perror("clock_gettime()");
		return PTS_UNRESOLVED;
	}

	ts.tv_sec += 1;
        ts.tv_nsec=0;

	/* Try to lock Semaphore */
	sts = sem_timedwait(&mysemp, &ts);

	if ( sem_post(&mysemp) == -1 ) {
		perror(ERROR_PREFIX "sem_post");
		return PTS_UNRESOLVED;
	}

        if( sem_getvalue(&mysemp, &val) == -1 ) {
                perror(ERROR_PREFIX "sem_getvalue");
                return PTS_UNRESOLVED;
        }

       if ((val == 1) && (sts == -1)) {
                 puts("TEST PASSED");
                 sem_destroy(&mysemp);
                 return PTS_PASS;
       } else {
                 puts("TEST FAILED");
                 return PTS_FAIL;
       }
}
